nutation vs nod

nutation and nod both are nouns.

Word	Noun	Adjective	Verb	Adverb
nutation	Yes	No	No	No
nod	Yes	No	Yes	No

As nouns, nod is a hypernym of nutation; that is, nod is a word with a broader meaning than nutation:

nutation (noun)	nod (noun)
uncontrolled nodding	the act of nodding the head
	a sign of assent or salutation or command

nutation (verb)	nod (verb)
	be almost asleep
	let the head fall forward through drowsiness
	lower and raise the head, as to indicate assent or agreement or confirmation
	express or signify by nodding
	sway gently back and forth, as in a nodding motion